40070551 has 4 divisors (see below), whose sum is σ = 40100400. Its totient is φ = 40040704.

The previous prime is 40070549. The next prime is 40070567. The reversal of 40070551 is 15507004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40070551 - 2¹ = 40070549 is a prime.

It is a super-3 number, since 3×40070551³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40070521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12811 + ... + 15628.

It is an arithmetic number, because the mean of its divisors is an integer number (10025100).

Almost surely, 2^40070551 is an apocalyptic number.

40070551 is a deficient number, since it is larger than the sum of its proper divisors (29849).

40070551 is a wasteful number, since it uses less digits than its factorization.

40070551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29848.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 40070551 is about 6330.1304093992. The cubic root of 40070551 is about 342.1961387601.

Adding to 40070551 its reverse (15507004), we get a palindrome (55577555).

The spelling of 40070551 in words is "forty million, seventy thousand, five hundred fifty-one".