55507419 has 18 divisors (see below), whose sum is σ = 88130588. Its totient is φ = 33640200.

The previous prime is 55507411. The next prime is 55507429. The reversal of 55507419 is 91470555.

It is not a de Polignac number, because 55507419 - 2³ = 55507411 is a prime.

It is a super-2 number, since 2×55507419² = 6162147128083122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55507411) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24397 + ... + 26574.

Almost surely, 2^55507419 is an apocalyptic number.

55507419 is a deficient number, since it is larger than the sum of its proper divisors (32623169).

55507419 is a wasteful number, since it uses less digits than its factorization.

55507419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50999 (or 50985 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 55507419 is about 7450.3301269138. The cubic root of 55507419 is about 381.4611771383.

The spelling of 55507419 in words is "fifty-five million, five hundred seven thousand, four hundred nineteen".