51554545 has 8 divisors (see below), whose sum is σ = 70703424. Its totient is φ = 35351664.

The previous prime is 51554539. The next prime is 51554551. The reversal of 51554545 is 54545515.

It is an interprime number because it is at equal distance from previous prime (51554539) and next prime (51554551).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51554545 - 2⁷ = 51554417 is a prime.

It is a super-2 number, since 2×51554545² = 5315742220314050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51554545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736459 + ... + 736528.

It is an arithmetic number, because the mean of its divisors is an integer number (8837928).

Almost surely, 2^51554545 is an apocalyptic number.

It is an amenable number.

51554545 is a deficient number, since it is larger than the sum of its proper divisors (19148879).

51554545 is a wasteful number, since it uses less digits than its factorization.

51554545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472999.

The product of its digits is 50000, while the sum is 34.

The square root of 51554545 is about 7180.1493717053. The cubic root of 51554545 is about 372.1822463277.

The spelling of 51554545 in words is "fifty-one million, five hundred fifty-four thousand, five hundred forty-five".