55490151 has 4 divisors (see below), whose sum is σ = 73986872. Its totient is φ = 36993432.

The previous prime is 55490131. The next prime is 55490173. The reversal of 55490151 is 15109455.

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

It is not a de Polignac number, because 55490151 - 2¹⁷ = 55359079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55490101) 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, 9248356 + ... + 9248361.

It is an arithmetic number, because the mean of its divisors is an integer number (18496718).

Almost surely, 2^55490151 is an apocalyptic number.

55490151 is a deficient number, since it is larger than the sum of its proper divisors (18496721).

55490151 is a wasteful number, since it uses less digits than its factorization.

55490151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18496720.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 55490151 is about 7449.1711619482. The cubic root of 55490151 is about 381.4216163317.

The spelling of 55490151 in words is "fifty-five million, four hundred ninety thousand, one hundred fifty-one".