55073577 has 16 divisors (see below), whose sum is σ = 81632768. Its totient is φ = 32797440.

The previous prime is 55073567. The next prime is 55073587. The reversal of 55073577 is 77537055.

It is an interprime number because it is at equal distance from previous prime (55073567) and next prime (55073587).

It is not a de Polignac number, because 55073577 - 2²² = 50879273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55073567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21568 + ... + 23985.

It is an arithmetic number, because the mean of its divisors is an integer number (5102048).

Almost surely, 2^55073577 is an apocalyptic number.

It is an amenable number.

55073577 is a deficient number, since it is larger than the sum of its proper divisors (26559191).

55073577 is a wasteful number, since it uses less digits than its factorization.

55073577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45600.

The product of its (nonzero) digits is 128625, while the sum is 39.

The square root of 55073577 is about 7421.1573895182. The cubic root of 55073577 is about 380.4647522293.

The spelling of 55073577 in words is "fifty-five million, seventy-three thousand, five hundred seventy-seven".