55154669 has 4 divisors (see below), whose sum is σ = 55331196. Its totient is φ = 54978144.

The previous prime is 55154657. The next prime is 55154677. The reversal of 55154669 is 96645155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2418025 + 52736644 = 1555^2 + 7262^2 .

It is a cyclic number.

It is not a de Polignac number, because 55154669 - 2⁴ = 55154653 is a prime.

It is a super-2 number, since 2×55154669² = 6084075024999122, which contains 22 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 (55154629) 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, 87794 + ... + 88419.

It is an arithmetic number, because the mean of its divisors is an integer number (13832799).

Almost surely, 2^55154669 is an apocalyptic number.

It is an amenable number.

55154669 is a deficient number, since it is larger than the sum of its proper divisors (176527).

55154669 is a wasteful number, since it uses less digits than its factorization.

55154669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176526.

The product of its digits is 162000, while the sum is 41.

The square root of 55154669 is about 7426.6189480813. The cubic root of 55154669 is about 380.6513965873.

The spelling of 55154669 in words is "fifty-five million, one hundred fifty-four thousand, six hundred sixty-nine".