61054557 has 8 divisors (see below), whose sum is σ = 82786080. Its totient is φ = 40013040.

The previous prime is 61054547. The next prime is 61054559. The reversal of 61054557 is 75545016.

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

It is not a de Polignac number, because 61054557 - 2⁶ = 61054493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61054559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172294 + ... + 172647.

It is an arithmetic number, because the mean of its divisors is an integer number (10348260).

Almost surely, 2^61054557 is an apocalyptic number.

It is an amenable number.

61054557 is a deficient number, since it is larger than the sum of its proper divisors (21731523).

61054557 is a wasteful number, since it uses less digits than its factorization.

61054557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345003.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 61054557 is about 7813.7415493475. The cubic root of 61054557 is about 393.7670404316.

The spelling of 61054557 in words is "sixty-one million, fifty-four thousand, five hundred fifty-seven".