55415739 has 4 divisors (see below), whose sum is σ = 73887656. Its totient is φ = 36943824.

The previous prime is 55415707. The next prime is 55415743. The reversal of 55415739 is 93751455.

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

It is not a de Polignac number, because 55415739 - 2⁵ = 55415707 is a prime.

It is a super-2 number, since 2×55415739² = 6141808257832242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55415697 and 55415706.

It is not an unprimeable number, because it can be changed into a prime (55415639) 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, 9235954 + ... + 9235959.

It is an arithmetic number, because the mean of its divisors is an integer number (18471914).

Almost surely, 2^55415739 is an apocalyptic number.

55415739 is a deficient number, since it is larger than the sum of its proper divisors (18471917).

55415739 is a wasteful number, since it uses less digits than its factorization.

55415739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18471916.

The product of its digits is 94500, while the sum is 39.

The square root of 55415739 is about 7444.1748367432. The cubic root of 55415739 is about 381.2510452717.

The spelling of 55415739 in words is "fifty-five million, four hundred fifteen thousand, seven hundred thirty-nine".