55070551 has 4 divisors (see below), whose sum is σ = 56109672. Its totient is φ = 54031432.

The previous prime is 55070527. The next prime is 55070557. The reversal of 55070551 is 15507055.

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

It is a cyclic number.

It is not a de Polignac number, because 55070551 - 2¹⁵ = 55037783 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 (55070557) 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, 519481 + ... + 519586.

It is an arithmetic number, because the mean of its divisors is an integer number (14027418).

Almost surely, 2^55070551 is an apocalyptic number.

55070551 is a deficient number, since it is larger than the sum of its proper divisors (1039121).

55070551 is a wasteful number, since it uses less digits than its factorization.

55070551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039120.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 55070551 is about 7420.9535101630. The cubic root of 55070551 is about 380.4577839305.

The spelling of 55070551 in words is "fifty-five million, seventy thousand, five hundred fifty-one".