55145151 has 16 divisors (see below), whose sum is σ = 82223200. Its totient is φ = 36526464.

The previous prime is 55145137. The next prime is 55145183. The reversal of 55145151 is 15154155.

It is not a de Polignac number, because 55145151 - 2¹¹ = 55143103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55145551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2266 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (5138950).

Almost surely, 2^55145151 is an apocalyptic number.

55145151 is a deficient number, since it is larger than the sum of its proper divisors (27078049).

55145151 is a wasteful number, since it uses less digits than its factorization.

55145151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175 (or 13169 counting only the distinct ones).

The product of its digits is 2500, while the sum is 27.

The square root of 55145151 is about 7425.9781173930. The cubic root of 55145151 is about 380.6294990854.

The spelling of 55145151 in words is "fifty-five million, one hundred forty-five thousand, one hundred fifty-one".