1551113402 has 8 divisors (see below), whose sum is σ = 2339668800. Its totient is φ = 771223804.

The previous prime is 1551113381. The next prime is 1551113407. The reversal of 1551113402 is 2043111551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1551113407) 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, 2166002 + ... + 2166717.

It is an arithmetic number, because the mean of its divisors is an integer number (292458600).

Almost surely, 2^1551113402 is an apocalyptic number.

1551113402 is a deficient number, since it is larger than the sum of its proper divisors (788555398).

1551113402 is a wasteful number, since it uses less digits than its factorization.

1551113402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332900.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1551113402 is about 39384.1770511966. The cubic root of 1551113402 is about 1157.5715650341.

Adding to 1551113402 its reverse (2043111551), we get a palindrome (3594224953).

The spelling of 1551113402 in words is "one billion, five hundred fifty-one million, one hundred thirteen thousand, four hundred two".